Dielectric barrier discharge lamp lighting device and method for detecting the number of lighting of dielectric barrier discharge lamp

摘要

In a dielectric barrier discharge lamp lighting device that lights a plurality of dielectric barrier discharge lamps in parallel with one lighting circuit, 24 dielectric barrier discharge lamps 1 and 24 dielectric barrier discharge lamps 1 are lit in parallel. A lighting circuit 2 including a DC power source 3, an inverter circuit 4, a step-up transformer 5, and a lighting number detection circuit 6. The lighting number detection circuit 6 detects the number of dielectric barrier discharge lamps that are normally lit from the first peak value immediately after the positive / negative polarity inversion of the high-voltage substantially rectangular wave voltage output from the step-up transformer 5, and the number is If the number is less than the predetermined number, the operation of the lighting circuit 2 is stopped.